MEDIA ALERT: Calix to Present at Open Server Summit

SANTA CLARA, CA--(Marketwired - April 12, 2016) - Calix, Inc.
(NYSE: CALX), the world leader in enabling service providers to deliver a gigabit experience to their subscribers, today announced that senior product leader Evan Parker will be speaking at the upcoming Open Server Summit in Santa Clara, CA at the Santa Clara Convention Center. Taking place April 13-14, the Open Server Summit brings engineers, IT architects, and technologists together to share the latest information on converged server-storage-networking infrastructures using industry-standard hardware and open-source software.

Event Details:

"Customer Implementations of Open Source Networking" (Session C-201) will be presented on Thursday, April 14th at 8:30-9:45 a.m.

Senior product leader Evan Parker will present a joint Calix ONOS Project collaboration, which creates an Apache Kafka northbound interface within ONOS, allowing existing and new applications written in virtually any language to integrate with ONOS via Kafka clients. This contribution opens ONOS to a wide number of non-Java applications, significantly expanding the scope of control of ONOS.

Chaired by Jathin Ullal, infrastructure architect at Saygo, Parker will be joined by representatives from AT&T Labs, Cumulus Networks, HPE, and Walmart Labs in this panel discussion.

About Calix

Calix, Inc. (NYSE: CALX) is a global leader in access innovation. Its Unified Access portfolio of broadband communications access software, systems, and services enables communications service providers worldwide to transform their networks and become the broadband provider of choice to their subscribers. For more information, visit the Calix website at www.calix.com.

This press release may contain forward-looking statements that are based upon management's current expectations and are inherently uncertain. Forward-looking statements are based upon information available to us as of the date of this release, and we assume no obligation to revise or update any such forward-looking statement to reflect any event or circumstance after the date of this release, except as required by law. Actual results and the timing of events could differ materially from current expectations based on risks and uncertainties affecting Calix's business. The reader is cautioned not to rely on the forward-looking statements contained in this press release. Additional information on potential factors that could affect Calix's results and other risks and uncertainties are detailed in its quarterly reports on Form 10-Q and Annual Report on Form 10-K filed with the SEC and available at www.sec.gov.